IBM 621858U Installation Guide - Page 59

Monitor, video, problems

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Monitor or video problems v Follow the suggested actions in the order in which they are listed in the Action column until the problem is solved. v See the parts listing in the Problem Determination and Service Guide to determine which components are customer replaceable units (CRU) and which components are field replaceable units (FRU). v If an action step is preceded by "(Trained service technician)," that step must be performed only by a trained service technician. Symptom Action The screen is blank. 1. Make sure that: v The computer power cord is connected to the computer and a working electrical outlet. v The monitor cables are connected correctly. v The monitor is turned on and the brightness and contrast controls are adjusted correctly. Important: In some memory configurations, the 3-3-3 beep code might sound during the POST, followed by a blank monitor screen. It this occurs and the Boot Fail Count option in the Start Options of the Configuration/Setup Utility program is set to enabled (its default setting), you must restart the computer three times to force the system BIOS to reset the CMOS values to the default configuration (the memory connector or bank of connectors enabled). 2. Make sure that damaged BIOS code is not affecting the video, (see "Recovering from a POST/BIOS update failure" in the Problem Determination and Service Guide). 3. Replace the following components one at a time, in the order shown, restarting the computer each time. a. Monitor b. Video adapter (if one is installed) c. (Trained service technician only) System board. Only the cursor appears. See "Solving undetermined problems" in the Problem Determination and Service Guide. The monitor works when you turn on the computer, but the screen goes blank when you start some application programs. 1. Make sure that: v The application program is not setting a display mode that is higher than the capability of the monitor. v You installed the necessary device drivers for the applications. 2. Replace the monitor. Chapter 5. Solving problems 47

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Monitor
or
video
problems
v
Follow
the
suggested
actions
in
the
order
in
which
they
are
listed
in
the
Action
column
until
the
problem
is
solved.
v
See
the
parts
listing
in
the
Problem
Determination
and
Service
Guide
to
determine
which
components
are
customer
replaceable
units
(CRU)
and
which
components
are
field
replaceable
units
(FRU).
v
If
an
action
step
is
preceded
by
“(Trained
service
technician),”
that
step
must
be
performed
only
by
a
trained
service
technician.
Symptom
Action
The
screen
is
blank.
1.
Make
sure
that:
v
The
computer
power
cord
is
connected
to
the
computer
and
a
working
electrical
outlet.
v
The
monitor
cables
are
connected
correctly.
v
The
monitor
is
turned
on
and
the
brightness
and
contrast
controls
are
adjusted
correctly.
Important:
In
some
memory
configurations,
the
3-3-3
beep
code
might
sound
during
the
POST,
followed
by
a
blank
monitor
screen.
It
this
occurs
and
the
Boot
Fail
Count
option
in
the
Start
Options
of
the
Configuration/Setup
Utility
program
is
set
to
enabled
(its
default
setting),
you
must
restart
the
computer
three
times
to
force
the
system
BIOS
to
reset
the
CMOS
values
to
the
default
configuration
(the
memory
connector
or
bank
of
connectors
enabled).
2.
Make
sure
that
damaged
BIOS
code
is
not
affecting
the
video,
(see
“Recovering
from
a
POST/BIOS
update
failure”
in
the
Problem
Determination
and
Service
Guide
).
3.
Replace
the
following
components
one
at
a
time,
in
the
order
shown,
restarting
the
computer
each
time.
a.
Monitor
b.
Video
adapter
(if
one
is
installed)
c.
(Trained
service
technician
only)
System
board.
Only
the
cursor
appears.
See
“Solving
undetermined
problems”
in
the
Problem
Determination
and
Service
Guide
.
The
monitor
works
when
you
turn
on
the
computer,
but
the
screen
goes
blank
when
you
start
some
application
programs.
1.
Make
sure
that:
v
The
application
program
is
not
setting
a
display
mode
that
is
higher
than
the
capability
of
the
monitor.
v
You
installed
the
necessary
device
drivers
for
the
applications.
2.
Replace
the
monitor.
Chapter
5.
Solving
problems
47